[ 1823.287296] br0: port 1(dummy0) entered blocking state
[ 1823.287333] br0: port 1(dummy0) entered disabled state
[ 1823.287370] dummy0: entered allmulticast mode
[ 1823.287435] dummy0: entered promiscuous mode
[ 1823.290891] br0: port 1(dummy0) entered blocking state
[ 1823.290924] br0: port 1(dummy0) entered forwarding state
[ 1823.535955] dummy0: left allmulticast mode
[ 1823.536002] dummy0: left promiscuous mode
[ 1823.536033] br0: port 1(dummy0) entered disabled state